Cita APA (7a ed.)

Smith, W. G. (1936). Practical descriptive geometry (4a ed.). Mac-Graw Hill bock co.

Cita Chicago Style (17a ed.)

Smith, William Griswold. Practical Descriptive Geometry. 4a ed. New York: Mac-Graw Hill bock co, 1936.

Cita MLA (9a ed.)

Smith, William Griswold. Practical Descriptive Geometry. 4a ed. Mac-Graw Hill bock co, 1936.